From patchwork Tue Nov 1 14:46:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13027019 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 638E5C433FE for ; Tue, 1 Nov 2022 14:46:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229511AbiKAOqy (ORCPT ); Tue, 1 Nov 2022 10:46:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230357AbiKAOqy (ORCPT ); Tue, 1 Nov 2022 10:46:54 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1AA211C137 for ; Tue, 1 Nov 2022 07:46:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id C0F89B81DE8 for ; Tue, 1 Nov 2022 14:46:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 03FEAC433D6; Tue, 1 Nov 2022 14:46:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667314010; bh=hR4n/WdwUFH1ht7bOelDcd/wkqhBjpnPe5mAmyEPMgs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cVicQ/ar3dKXwx+7HddKhWXw2B2oIQruOKiGxwXYmgvsgnS2G5+nrJv918Q+334lw A1GZXp3SOSe7zzJxRu3l+p6o+J3vmk4de5UQldM1J8qFSkHeZdlpYd7iIyhXg8VNby 0lvYka8BsYEpLdkg5HPA7W+NQV5FD8R8Xm6zftMYBqSeofDzaTggdJshZDQCSBLajF +gk4/8CSMwa+F6x7z3+S4zwDA8XJn8tbPXIR/D2kC0ocs4TvTvfL5E9KJf92/VYghM A/iFtmCayW14gEut9B1sE8XtvrNbGwNEiOalsllmzqwQNi56M/qjXAkqmWdJMPh3h5 3tI4xndQ7EHnw== From: Jeff Layton To: chuck.lever@oracle.com Cc: neilb@suse.de, linux-nfs@vger.kernel.org Subject: [PATCH v5 1/5] nfsd: remove the pages_flushed statistic from filecache Date: Tue, 1 Nov 2022 10:46:43 -0400 Message-Id: <20221101144647.136696-2-jlayton@kernel.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221101144647.136696-1-jlayton@kernel.org> References: <20221101144647.136696-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org We're counting mapping->nrpages, but not all of those are necessarily dirty. We don't really have a simple way to count just the dirty pages, so just remove this stat since it's not accurate. Signed-off-by: Jeff Layton --- fs/nfsd/filecache.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index b6b957e25dfd..90e62042d6d6 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -34,7 +34,6 @@ static DEFINE_PER_CPU(unsigned long, nfsd_file_cache_hits); static DEFINE_PER_CPU(unsigned long, nfsd_file_acquisitions); static DEFINE_PER_CPU(unsigned long, nfsd_file_releases); static DEFINE_PER_CPU(unsigned long, nfsd_file_total_age); -static DEFINE_PER_CPU(unsigned long, nfsd_file_pages_flushed); static DEFINE_PER_CPU(unsigned long, nfsd_file_evictions); struct nfsd_fcache_disposal { @@ -372,7 +371,6 @@ nfsd_file_flush(struct nfsd_file *nf) if (!file || !(file->f_mode & FMODE_WRITE)) return; - this_cpu_add(nfsd_file_pages_flushed, file->f_mapping->nrpages); if (vfs_fsync(file, 1) != 0) nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id)); } @@ -999,7 +997,6 @@ nfsd_file_cache_shutdown(void) per_cpu(nfsd_file_acquisitions, i) = 0; per_cpu(nfsd_file_releases, i) = 0; per_cpu(nfsd_file_total_age, i) = 0; - per_cpu(nfsd_file_pages_flushed, i) = 0; per_cpu(nfsd_file_evictions, i) = 0; } } @@ -1213,7 +1210,7 @@ nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp, */ int nfsd_file_cache_stats_show(struct seq_file *m, void *v) { - unsigned long releases = 0, pages_flushed = 0, evictions = 0; + unsigned long releases = 0, evictions = 0; unsigned long hits = 0, acquisitions = 0; unsigned int i, count = 0, buckets = 0; unsigned long lru = 0, total_age = 0; @@ -1241,7 +1238,6 @@ int nfsd_file_cache_stats_show(struct seq_file *m, void *v) releases += per_cpu(nfsd_file_releases, i); total_age += per_cpu(nfsd_file_total_age, i); evictions += per_cpu(nfsd_file_evictions, i); - pages_flushed += per_cpu(nfsd_file_pages_flushed, i); } seq_printf(m, "total entries: %u\n", count); @@ -1255,6 +1251,5 @@ int nfsd_file_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "mean age (ms): %ld\n", total_age / releases); else seq_printf(m, "mean age (ms): -\n"); - seq_printf(m, "pages flushed: %lu\n", pages_flushed); return 0; }